#include<bits/stdc++.h>
using namespace std;
int ctof(int c)
{
	return 9.0/5*c+32;
}
int main()
{
	int i;
	for(i=-100;i<=150;i+=5)
	printf("c=%d->f=%d\n",i,ctof(i));
    return 0;
}
